William Henry Brouse (June 15, 1824 – August 23, 1881) was a Canadian physician and politician.
Born in Matilda Township, Dundas County, Upper Canada of German ancestry, he attended Upper Canada Academy in Cobourg, Canada West in 1839, Victoria College until 1845, and received his Doctor of Medicine degree in 1847 from McGill College.
He was first elected to the House of Commons of Canada representing the Ontario riding of Grenville South in the 1872 federal election.
A Liberal, he was re-elected in 1874.
He was nominated to the Senate of Canada in 1878 representing the senatorial division of Prescott, Ontario and sat as a Reformer until his death in 1881.
He was the nephew of George Brouse, an Upper Canada MP.
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